Milling machine



MILLING MACHINE Patented May 29, .1923.5A

u NirED "STATI-:s rArNr forme-n.1;-

JOHAN ERIK BERGSTRM, OF CHBISTIANIA, NORWAY, ASSIGNQB T GUSTAF STABLE,

i 0F STOCKHOLM, SWEDEN.

MrLLI'Ne A MACHINE.

Appimuqn ma VJanuary 24,1921. serial manana? (emmen mman :um rnovrsronser rm; A cr or mancare, ,1621; 4i eraan, 131e.) A

" To all 'whom z't may concern.'-

Be it known that I, 'JOHAN ERIK BERG- s'rRM, a subject of the `King ofNorway, residing at Waldemar Thranesgate, Christiania, Norway, haveinvented certain new and useful Improvements in Milling Machines ofwhich the following is a specifica-` Fig. -2 is an end view ofthe same,the

driving pulleys being removed.

1 designates a suitable 'frame having` a groove fortaking upa tappet2'connect-ed to a-slide' integral to.a `cylindri'cal frame'i 4. -As thesaid groove in the frame lvhas an inclineddirection a motion-- of theslidej3 will produce a vertical adjusting motion of the axisv of thecylindrical frame. After adjusting the slide the latter may be fixedv inits position by means of a bolt 5, passing through a slot in the slideor in any other Way suitable for the purpose. The cylindrical frame isslit as shown in provided with lugs. 6 and 7 which may be tightened asrequired by means of a bolt 8 which is threaded into the lug 6 and hasits head bearing against lug 7.

The frame 4' encloses a turnable cutter block 9 which is cylindrical andmay be anlarly adjusted and also moved-in an axial irection.

In the cutter block are a number of bores the axes of which convergetowards a point in the axis of the cutter block. In these bores areplaced sleeves 10, provided with threads at their head ends. The heads11 are adapted to be manipulated by a wrench in order that the l sleevesmay be moved in one direction or another in the cutter block.

Obviously it is sufficient for adjusting the sleeves that the part ofthe sleeve next to.

the head be provided with threads and the corresponding part of thebores in the cutter block 9 be also screw threaded.

In the block 9 is-an axial opening taking.

.piece I (for which I have filed application axially for patent inNorway, dated January 8,

pulley 15 fixed to the r.an axial opening Fig. 2 and ,piece an upaclamping piece, 12 having recesses coincident with the bores whichreceive the bearing sleeves 10 lso thatthe clamping piece will tightenthese sleeves when driven outwards. In vorder to adjust the clampingprovide a sleeve 13 which is threaded intoA the cutter block 9 and issuitably provided with holesfor takin up an adjusting tool external tothe cutter lock.

' In the sleevesv 1,0.are at o ne end of-which is attached a drivingsame by means .of a set placed spindles 14,

screw 16.I The pulley bears with a shoulder Y againStthe head 11. Atthelower. end the spmdles are. providedwith a -shoulder-II,`

bearing againstthe'4 lower vend of the sleeve 10. e In this way-,casualaxial movement of the. spindles 144 is prevented after adjustment. fixedfor instance by means yof threads, suitably shaped milling cutters 15f.-

\- Thesleevef13 and clamping. piece 12 have adapted .to Vreceive the Itwill be 'seen that. the tools ma be adjusted in any desiredposition-to tpiece.` v y longitudinal adjustment of Ithe the tools may be lifted orlowered. By longitudinaladjustment of the sleeves 10 the position of thetools may be changed accordin to the dimensions of the work by turningthe block 9 the correct position of the tools to grooves in the workpiece may be secured. The movement of the cutter block may be obtainedin anyconvenient manner.

Having now described my invention what I claim is:

1. In a milling machine, an inclined support, a cylindrical frameadjusted upon said inclined support, a. turn-table cutter block restingin the said frame and angularly ad- `justable to anyl desiredposition,bearing sleevesjeach arranged in the cutter block'at van acute angle tothe axis thereof and in the 'plane of the said'axis, landcutter spindlesmounted in said sleeves.

2. In a milling machine, aninclined support, a cylindrical frameadjusted upon said To the end .of the spindles 14 are -l e work'"inclined support, a turn-table cutter block resting in the said frameand angularly adjustable to any desired, position, bearing sleevesarranged in the cutter block at an acute angle to the axis thereof andin the plane of the said axis, means for adjusting the sleeves axiallyin the cutter block :md spindles resting in the said sleeves und pro- 5vided with milling cutters at one end und driving sleeves at theopposite end.

3. In u milling machine, an inclined support, a cylindrical frameadjusted upon said inclined support, :t turn-table cutter block 10resting in thesaid frame and ungularly ad# justable to any desiredposition, bearing sleeves each arranged in the cutter block at an acuteangle to the axis thereof and in the

